Samuel b



(No Model.) v

s. B. JENKINS. BLEOTRIGALLY HEATED VESSEL.

N0.. 19L484. Patented Feb. 7, 1893.

UNITED STATES PATENT OFFICE.

SAMUEL B. JENKINS, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE BUT-TERFIELD-MITCHELL ELECTRIC HEATING COMPANY, OF SAME PLACE.

Q ELECTRlCALLY-HEATED VESSEL.

SPECIFICATION forming part of Letters Patent No. 491,484, dated February'7, 1893.

Application filed June 9, 1892. Serial No. $363M. (No model.)

To all whom it may concern:

' Be it known that I, SAMUEL B. JENKINS, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented certain new and useful Improvements in Electrically-HeatedVessels; and I do hereby declare the following to bea full, clear, andexact description of the invention, such as will enable others skilledIo in the art to which it appertains to make and use the same.

This invention relates to electrically heated Vessels having theirbottoms provided with electrical heating devices; and it consists in I5the combination of such a vessel having sector-shaped blocks or theirequivalents formed on its bottom with an electrical conductor woven fromblock to block instead of being wound in helices.

In the accompanying drawings, Figure 1 represents a perspective view,taken partly from below, of a vessel embodying my invention, and Fig. 2represents a plan View thereof, only the first winding of the wire beingshown.

A designates the body of the vessel, which, as shown is cylindrical andof moderate height, but may be varied in either respect. On the bottom Aof this vessel sector shaped blocks B are formed integral therewith anddivided by narrow intervals or channels I). The said blocks do notextend quite to the center of the said bottom but leave there a circularopen space I). There is also aperipheral an- 3 5 nular open space boutside of the circular series of these blocks. An insulated wire C,

forming part of an electric circuit is wound from block to block beingwoven through these passages or intervals 1) without forming a completecoil or helix about any one of them. This weaving may be accomplished inmany ways but the one shown will answer Very well; only a single wirebeing used and that wound from each block to the one next in orderaround and around the series until there is a complete network or systemincluding a great length of heating wire, all of which will be firmlyheld in place between the blocks, and every part of which will haveimmediate contact with some part of the heat conducting 5o material ofthe vessel. The shape and arrangement of the blocks B may of course bevaried and a different kind of electrical conductor maybe substitutedfor the wire de scribed; but the construction as shown is the mostetlicacious for the purpose.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. An electrically heated vessel having blocks formed on its bottom, incombination with an electrical conductor woven from block to blocksubstantially as set forth.

2. A vessel having a circular series of sectoral blocks B formed on itsbottom, having intervals or passages 19 between them, in combinationwith an electrical conductor woven from block to block through the saidintervals, inclosing the whole series of blocks and having every part ofthe said conductor in contact with at least one of them substantially asset forth.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL B. JENKINS.

Witnesses:

ARTHUR B. SMITH, PELATIAH R. TRIPP.

